<template>
    <div>
        <!-- 图片上传组件辅助-->
         <el-upload
          class="avatar-uploader"
          :action="serverUrl"
          name="file"
          :headers="header"
          :show-file-list="false"
          list-type="picture"
          :multiple="false"
          :before-upload="beforeUpload">
        </el-upload>
        <!-- <el-row v-loading="quillUpdateImg" element-loading-text="努力加载中..."></el-row> -->
        <quill-editor
                class="editor"
                v-model="content"
                ref="myQuillEditor"
                :options="editorOption"
                v-bind="$attrs"
                v-on="$listeners"
                @blur="onEditorBlur($event)" @focus="onEditorFocus($event)"
                @change="onEditorChange($event)">
        </quill-editor>
    </div>
</template>
<script>
    // 工具栏配置
    const toolbarOptions = [
        ["bold", "italic", "underline", "strike"], // 加粗 斜体 下划线 删除线
        ["blockquote", "code-block"], // 引用  代码块
        [{header: 1}, {header: 2}], // 1、2 级标题
        [{list: "ordered"}, {list: "bullet"}], // 有序、无序列表
        [{script: "sub"}, {script: "super"}], // 上标/下标
        [{indent: "-1"}, {indent: "+1"}], // 缩进
        // [{'direction': 'rtl'}],                         // 文本方向
        [{size: ["small", false, "large", "huge"]}], // 字体大小
        [{header: [1, 2, 3, 4, 5, 6, false]}], // 标题
        [{color: []}, {background: []}], // 字体颜色、字体背景颜色
        [{font: []}], // 字体种类
        [{align: []}], // 对齐方式
        ["clean"], // 清除文本格式
        ["link", "image", "video"] // 链接、图片、视频
    ];

    import {quillEditor} from "vue-quill-editor";
    import "quill/dist/quill.core.css";
    import "quill/dist/quill.snow.css";
    import "quill/dist/quill.bubble.css";

    export default {
        props: {
            /*编辑器的内容*/
            value: {
                type: String
            },
            /*图片大小*/
            maxSize: {
                type: Number,
                default: 4000 //kb
            }
        },

        components: {
            quillEditor
        },

        data() {
            return {
                content: this.value,
                quillUpdateImg: false, // 根据图片上传状态来确定是否显示loading动画，刚开始是false,不显示
                editorOption: {
                    theme: "snow", // or 'bubble'
                    placeholder: "",
                    modules: {
                        toolbar: {
                            container: toolbarOptions,
                            // container: "#toolbar",
                            handlers: {
                                image: function (value) {
                                    if (value) {
                                        // 触发input框选择图片文件
                                        document.querySelector(".avatar-uploader input").click();
                                    } else {
                                        this.quill.format("image", false);
                                    }
                                },
                            }
                        }
                    }
                },
                serverUrl: "", // 这里写你要上传的图片服务器地址
                header: {
                    // token: sessionStorage.token
                } // 有的图片服务器要求请求头需要有token
            };
        },
        watch: {
            value(val) {
                console.log(val)
                this.content = val;
            }
        },
        methods: {
            onEditorBlur() {
                //失去焦点事件
            },
            onEditorFocus() {
                //获得焦点事件
            },
            onEditorChange() {
                //内容改变事件
                this.$emit("input", this.content);
            },

            // 富文本图片上传前
            beforeUpload(file) {
                //判断上传图片的大小，不能大于2M
                if (file.type.search("image") == -1) {
                    this.$message.warning("只能上传图片文件");
                    return;
                }

                let maxSize = 2 * 1024 * 1024;//上传图片不能大于2M
                if (file.size > maxSize) {
                    this.$message.warning("请上传小于2M的图片");
                    return;
                }
                // 显示loading动画
                this.quillUpdateImg = true;
                let quill = this.$refs.myQuillEditor.quill;
                var reader = new FileReader();
                reader.onload = function (e) {
                    var base64 = e.target.result;
                    let length = quill.getSelection().index;
                    quill.insertEmbed(length, "image", base64);
                    // 调整光标到最后
                    quill.setSelection(length + 1);
                    this.quillUpdateImg = false;
                }
                if (file) {
                    reader.readAsDataURL(file);
                }
                this.quillUpdateImg = false;
            }
        }
    };
</script>

<style>
    .editor {
        line-height: normal !important;
    }

    .ql-container.ql-snow {
        border: 1px solid #ccc;
        height: 220px;
    }

    .ql-snow .ql-tooltip[data-mode=link]::before {
        content: "请输入链接地址:";
    }

    .ql-snow .ql-tooltip.ql-editing a.ql-action::after {
        border-right: 0px;
        content: '保存';
        padding-right: 0px;
    }

    .ql-snow .ql-tooltip[data-mode=video]::before {
        content: "请输入视频地址:";
    }

    .ql-snow .ql-picker.ql-size .ql-picker-label::before,
    .ql-snow .ql-picker.ql-size .ql-picker-item::before {
        content: '14px';
    }

    .ql-snow .ql-picker.ql-size .ql-picker-label[data-value=small]::before,
    .ql-snow .ql-picker.ql-size .ql-picker-item[data-value=small]::before {
        content: '10px';
    }

    .ql-snow .ql-picker.ql-size .ql-picker-label[data-value=large]::before,
    .ql-snow .ql-picker.ql-size .ql-picker-item[data-value=large]::before {
        content: '18px';
    }

    .ql-snow .ql-picker.ql-size .ql-picker-label[data-value=huge]::before,
    .ql-snow .ql-picker.ql-size .ql-picker-item[data-value=huge]::before {
        content: '32px';
    }

    .ql-snow .ql-picker.ql-header .ql-picker-label::before,
    .ql-snow .ql-picker.ql-header .ql-picker-item::before {
        content: '文本';
    }

    .ql-snow .ql-picker.ql-header .ql-picker-label[data-value="1"]::before,
    .ql-snow .ql-picker.ql-header .ql-picker-item[data-value="1"]::before {
        content: '标题1';
    }

    .ql-snow .ql-picker.ql-header .ql-picker-label[data-value="2"]::before,
    .ql-snow .ql-picker.ql-header .ql-picker-item[data-value="2"]::before {
        content: '标题2';
    }

    .ql-snow .ql-picker.ql-header .ql-picker-label[data-value="3"]::before,
    .ql-snow .ql-picker.ql-header .ql-picker-item[data-value="3"]::before {
        content: '标题3';
    }

    .ql-snow .ql-picker.ql-header .ql-picker-label[data-value="4"]::before,
    .ql-snow .ql-picker.ql-header .ql-picker-item[data-value="4"]::before {
        content: '标题4';
    }

    .ql-snow .ql-picker.ql-header .ql-picker-label[data-value="5"]::before,
    .ql-snow .ql-picker.ql-header .ql-picker-item[data-value="5"]::before {
        content: '标题5';
    }

    .ql-snow .ql-picker.ql-header .ql-picker-label[data-value="6"]::before,
    .ql-snow .ql-picker.ql-header .ql-picker-item[data-value="6"]::before {
        content: '标题6';
    }

    .ql-snow .ql-picker.ql-font .ql-picker-label::before,
    .ql-snow .ql-picker.ql-font .ql-picker-item::before {
        content: '标准字体';
    }

    .ql-snow .ql-picker.ql-font .ql-picker-label[data-value=serif]::before,
    .ql-snow .ql-picker.ql-font .ql-picker-item[data-value=serif]::before {
        content: '衬线字体';
    }

    .ql-snow .ql-picker.ql-font .ql-picker-label[data-value=monospace]::before,
    .ql-snow .ql-picker.ql-font .ql-picker-item[data-value=monospace]::before {
        content: '等宽字体';
    }
</style>